Fuses & Circuit Breakers

Although they work in different ways, fuses and circuit breakers broadly have the same purpose; to protect electrical appliances and electrical circuits from short circuits, and excessive current (called overcurrent or overload).

Fuses

Fuses are relatively low cost electrical safety devices. If too much current enters the circuit, the fuse will burn out (sometimes called blowing out). When the fuse blows out it breaks the circuit. This protects the attached devices and allows you to touch devices without being electrocuted. When the fuse blows, it must be replaced before using the device or appliance again.

Circuit breakers

Circuit breakers work in a similar way to fuses, but they are resettable. Once a fault is detected (this is typically a short circuit or an excessive amount of current flowing through the circuit) the circuit breaker will interrupt the flow of current. When the circuit breaker trips, it's simply a case of flicking a switch to reset the circuit breaker. As soon as you've reset the circuit breaker, it is ready to use again.

Circuit Breakers
Circuit Breakers
Earth & Lightning Protection
Earth & Lightning Protection
Fuse Holders & Accessories
Fuse Holders & Accessories
Fuses
Fuses

46578 Products showing for Fuses & Circuit Breakers

127 / 999+
In Stock
Better World
Schneider Electric 6A T Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 211-2283
  • Mfr. Part No. DF2CA06
Each (In a Pack of 10)
MYR41.258
In Stock
RS PRO 10A Panel Mount Fuse Holder for 5 x 20mm Fuse, 250V ac
  • RS Stock No. 188-4630
Each
MYR21.18
In Stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 16A Curve B, 400V AC, 110V DC, 6 kA Breaking Capacity
  • RS Stock No. 746-7560
  • Mfr. Part No. 2CDS252001R0165 S202-B16
Each
MYR276.68
Temporarily out of stock
ABB S800S MCB, 3P, 6A Curve C, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-746
  • Mfr. Part No. 2CCS863001R0064
Each
MYR2,209.39
In Stock
Eaton 16A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 852-6945
  • Mfr. Part No. HTB-44M-R
Each
MYR25.87
In Stock
Siemens 35A Centred Tag Fuse, NH00, 690V ac
  • RS Stock No. 397-436
  • Mfr. Part No. 3NE8003-1
Each (In a Pack of 3)
MYR367.533
Limited stock
Eaton 2A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 848-2766
  • Mfr. Part No. AGC-2-R
Each
MYR10.20
In Stock
Eaton 100A British Standard Fuse, FEE, 690 V, 700 V, 71mm
  • RS Stock No. 156-9005
  • Mfr. Part No. 100FEE
Each
MYR716.21
Being discontinued
RS PRO 13A T Ceramic Cartridge Fuse, 6.3 x 25mm
  • RS Stock No. 174-7960
Each (In a Box of 500)
MYR0.883
Temporarily out of stock
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 3P 800A, Fixed Mount
  • RS Stock No. 232-0136
  • Mfr. Part No. 1SDA060278R1 T6S800 FF PR221-LS/I 800A
Each
MYR10,101.65
In Stock
ABB System Pro M Compact S200 MCB, 3P, 100A Curve C, 440V AC, 6 kA Breaking Capacity
  • RS Stock No. 231-9682
  • Mfr. Part No. 2CDS253001R0824 S203-C100 6kA 100A
1 Box of 1
MYR1,077.87
In Stock
Better World
Schneider Electric Multi 9 MCB, 2P, 10A Curve D, 10 kA Breaking Capacity
  • RS Stock No. 219-9166
  • Mfr. Part No. M9F43210
Each
MYR1,089.10
Last RS stock
Littelfuse 15A Blue Blade Car Fuse, 32V ac/dc
  • RS Stock No. 878-3286
  • Mfr. Part No. 0MIN015.V
Each (In a Pack of 50)
MYR4.039
In Stock
Eaton xEffect MCB, 3P, 50A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 847-3406
  • Mfr. Part No. 278878 FAZ-C50/3
Each
MYR717.64
In Stock
RS PRO PC Board Non Resettable Fuse, Radial 6.3A, 250V ac
  • RS Stock No. 611-9346
Each (In a Pack of 10)
MYR4.487
In Stock
SIBA 63A NH Fuse, NH000, 500V ac
  • RS Stock No. 421-700
  • Mfr. Part No. 20-000-13/63E1
Each (In a Pack of 3)
MYR55.82
In Stock
Better World
ABB System Pro M Compact S200 MCB, 1P, 4A Curve C, 253V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 746-7652
  • Mfr. Part No. 2CDS251001R0044 S201-C4
Each
MYR112.90
In Stock
Better World
Schneider Electric Acti 9 iC60N MCB, 1P, 6A Curve C, 240V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 776-3442
  • Mfr. Part No. A9F77106
Each
MYR280.46
In Stock
Eaton xEffect MCB, 2P, 32A Curve C, 230 → 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 769-4643
  • Mfr. Part No. 239106 FAZ6-C32/2
Each
MYR419.69
In Stock
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 160A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 232-0237
  • Mfr. Part No. 1SDA067058R1 XT2N 160 Ekip LS/I 160A FF
Each
MYR3,201.95
1
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